Cannot get pixels when webcam is not running, error. (Unity 2D)

Hey everybody!!! I want to take a picture from my web camera but the programm decides that my camera is not running. This is my code:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.UI;
 using System.IO;
 
 public class Open_Camera : MonoBehaviour {
 
     public RawImage rawimage;
     private WebCamTexture webCam = null;
     
     void Start()
     {
         WebCamTexture webCam = new WebCamTexture();
         
         rawimage.texture = webCam;
         rawimage.material.mainTexture = webCam;
         
         webCam.Play();
 
    // I tried to use the function code inside Start() to test it, but all I get is a black picture.           
    //I think black picture is because it takes the picture before camera open.

         /*Texture2D photo = new Texture2D(rawimage.texture.width, rawimage.texture.height);
         photo.SetPixels(webCam.GetPixels());
         
         photo.Apply();
         
         byte[] bytes = photo.EncodeToPNG();
        
         File.WriteAllBytes("Assets/Samples/New Pics/" + "testing.png", bytes);
         counter++;
         */
     }

     private void Update()
     {
         WebCamTexture webCam = new WebCamTexture();
         if (Input.GetMouseButtonDown(0))
         {
             saveImage(webCam);
             webCam.Stop();
         }
     }
 
     string path = "A_path"; //this is not the path I use.
     int counter = 0;
 
     void saveImage(WebCamTexture x)
     {
  
         Texture2D photo = new Texture2D(rawimage.texture.width, rawimage.texture.height, TextureFormat.ARGB32, false);
 
         photo.SetPixels(x.GetPixels());
         Debug.Log("test");
         photo.Apply();
 
         byte[] bytes = photo.EncodeToPNG();
 
         File.WriteAllBytes("Assets/Samples/New Pics/" + (counter.ToString() + "testing.png"), bytes);
         counter++;
     }
 }

Also when i run it I get Cannot get pixels when webcam is not running. Like something is closing my camera. Thnx for the help